cryptography.h and lwip/cryptography/

cryptography.h is the root-level umbrella for the lower-level lwip/cryptography/*.h headers. These headers expose algorithmically-secure primitives that can be used outside the network stack.

Header	Purpose
aes.h	AES-GCM, AES-CCM, and AES-CBC support.
asn1.h	DER/ASN.1 parsing support.
base64.h	Base64 encoding and decoding.
bytes.h	Secure buffer comparison and secure erasure helpers.
hash.h	SHA-256 hashing support.
hkdf.h	HMAC-based key derivation.
hmac.h	HMAC-SHA-256 support.
keyobject.h	Imported key object handling.
passwords.h	PBKDF2 password-based key derivation.
pkcs8.h	PKCS#8 and SEC1 key parsing/serialization.
random.h	TRNG and secure random byte generation.
rsa.h	RSA support for 1024-bit through 2048-bit keys.
truststore.h	Certificate metadata and chain-verification helpers used by TLS.
x25519.h	X25519 elliptic-curve scalar multiplication.
x509.h	X.509 certificate parsing.